Did you forget about Andrew's sexual assaults and the Queen paying to hush it up?These people think it's their birthright to rule over people like you and you just go 'oh, ok, well I suppose it's good for tourism'. The fact they don't really have political power is besides the point.
'A few quid a year' from each tax payer adds up to a LOT. That could go elsewhere - to struggling parents or towards education and children or towards those who can't pay energy bills. Anywhere but in the pockets of people who think 'I deserve to rule these cretins on this island'. You are beneath their concern - the quicker you figure this out the better. The landmarks would all sell tickets fine if we abolished the Royals, we just wouldn't have this stupid pomp and idiocy to deal with. Anyone arguing otherwise is absolutely tripping!
As for comparing to presidential families...awful awful comparison. Prime Ministers are the comparison here, not the Royals. But you knew that, you're just being disingenuous. The dispicable Royals are useless sacks of flesh and should be thrown in the Thames.